The Echo Express SEL Thunderbolt 2 Expansion Chassis from Sonnet is a single slot expansion chassis. It features 20 Gb/s Thunderbolt 2 technology that provides sufficient bandwidth to support many high-performance and demanding PCIe cards. It delivers maximum performance when connected to a computer with Thunderbolt 2.

The SEL is also fully compatible with computers with 10 Gb/s Thunderbolt technology, supporting most cards at full-performance, and may also be upgraded to Thunderbolt 3.The SEL is enabled by Thunderbolt technology, allowing PCIe expansion slots to be connected outside a computer. This compact desktop Thunderbolt 2 to PCIe card expansion chassis is suitable for connecting one professional 16Gb or 8Gb Fibre Channel, 10 Gigabit Ethernet, SAS/SATA host bus adapter or RAID controller PCIe card to any Mac with a Thunderbolt port..

• 20 Gb/s Thunderbolt 2 Technology
• Upgradable to Thunderbolt 3
• Supports Low-Profile Card
• 2 x Thunderbolt Ports
• 1 x PCIe 2.0 Slot
• Quiet Cooling System
• Automatic Power On/Off
• Rugged Aluminum Housing
• RoHS Compliant